App check not verifying requests in Expo managed workflow

[rgomezp]

Issue

I'm using Expo managed workflow & added the config plugin to my project as documented here. After releasing a new version of my app, 0% of my requests are verified despite having already registered my apps with attestation providers in Firebase.

From the language, it sounds like adding the config plugin is all the setup that needs to happen on the mobile side of the setup. If I'm still supposed to configure & install a custom provider, then this may be the issue. For us expo folks, some clarity here would be fantastic.

Otherwise, something may be broken.

---

Project Files

Javascript

In app.config.js

plugins: [
    [
      "onesignal-expo-plugin",
      {
        "mode": process.env.APP_VARIANT === 'development' ? "development" : "production",
        "smallIcons": ["./src/assets/notifIcons/ic_stat_onesignal_default.png"],
        "largeIcons": ["./src/assets/notifIcons/ic_onesignal_large_icon_default.png"],
      }
    ],
    "@react-native-google-signin/google-signin",
    "@react-native-firebase/app",
    "@react-native-firebase/app-check",
    "@react-native-firebase/crashlytics",
    "expo-apple-authentication",
    [
      "expo-build-properties",
      {
        ios: {
          useFrameworks: "static",
          deploymentTarget: "17.0"
        },
        android: {
          targetSdkVersion: 34
        }
      }
    ]
  ],

Edit: I just realized I installed App Check v 20.3.0 while all my other Firebase packages are on 19.2.2. Could this be the problem?